If you were provided a list of chemical formulas (ex: NaCl, CO 2 CaCl 2 , SO 3 ) just the formula, how might you identify which are and which are covalent?

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Answer:

See Explanation

Explanation:

The question is asking us about how to determine which compounds are ionic and which compounds are covalent.

First, we must understand that ionic compounds are formed between metals and nonmetals having a large difference in electronegativity.

Secondly, covalent compounds are mostly formed between atoms of nonmetal elements.

If we keep these things in mind, we can see that compounds such as NaCl and CaCl2 are ionic while CO2 and SO3 are covalent.